Selection of Tdd Patterns for Dl and Ul Communication

1. A method for selecting time-division duplex (TDD) patterns for downlink (DL) and uplink (UL) communication in TDD slots on component carriers (CCs) in a first cell, the method being performed by a network management node, the method comprising: performing selection of the TDD patterns for DL and UL communication on CCs in the first cell; according to the selection of the TDD patterns, at least first one of the CCs in the first cell supports DL heavy services and is configured with a first TDD pattern of the TDD patterns having a higher fraction of DL TDD slots than a fraction of UL TDD slots, and at least second one of the CCs in the first cell supports UL heavy services and is configured with a second TDD pattern of the TDD patterns having a higher fraction of UL TDD slots than a fraction of DL TDD slots, wherein the fraction of the DL TDD slots and the fraction of the UL TDD slots to use in the second TDD pattern is identified based at least on UL measurements in the first cell; and wherein a third cell neighboring the first cell, the network management node being configured to perform selection of a third TDD pattern for the third cell; and performing selection of the third TDD pattern for DL and UL communication on CCs in the third cell, and according to the third selection of the TDD pattern for the third cell, the CCs in the third cell is configured with the third TDD pattern having DL TDD slots only coinciding with the DL TDD slots of the second TDD pattern and UL TDD slots only coinciding with the UL TDD slots of the first TDD pattern.

2. The method according to claim 1, wherein a second cell neighboring the first cell, the method further comprising: obtaining information of selection of a TDD pattern for DL and UL communication on CCs in the second cell, and wherein according to the selection of TDD patterns for DL and UL communication on CCs in the first cell, at least one, but not all, of the CCs in the first cell is configured with a same TDD pattern as the CCs in the second cell.

3. The method according to claim 1, wherein according to the second TDD pattern, all TDD slots are UL TDD slots.

4. The method according to claim 1, wherein a fourth cell neighboring the first cell, wherein the network management node is configured to perform selection of a TDD pattern for the fourth cell, and wherein the method further comprises: performing selection of the TDD pattern for DL and UL communication on CCs in the fourth cell, wherein according to the selection of the TDD pattern for the fourth cell, DL and UL communication is to be performed on at least one CC not used in the first cell.

5. The method according to claim 1, wherein a second cell neighboring the first cell, and wherein the CCs used in the first cell occupy at least one frequency interval that is not occupied by CCs used in the second cell.

6. The method according to claim 1, wherein a second cell neighboring the first cell, and wherein the method further comprises: initiating blanking of at least some of DL TDD slots on CCs used in the second cell, wherein the at least some of the DL TDD slots to be blanked are determined based on the first TDD pattern and the second TDD pattern.

7. The method according to claim 1, wherein one single CC in the cell is configured with the first TDD pattern.

8. The method according to claim 1, wherein the first cell covers a private property area.

9. The method according to claim 8, wherein an industrial site is located at the private property area, wherein the first cell serves an industry network of the industrial site, and wherein a plurality of wireless devices of the industry network are served on the at least second one of the CCs configured with the second TDD pattern.

10. The method according to claim 1, wherein the CCs in the first cell occupy frequency bands equal to or higher than 24.25 GHz, or occupy frequency bands equal to or lower than 6 GHz.

11. The method according to claim 1, wherein only a subset of all wireless devices served in the first cell are served on the CCs configured with the second TDD pattern.

12. The method according to claim 1, wherein which of all wireless devices served in the first cell to be served on the CCs configured with the second TDD pattern depends on one or both of: required quality of service of the wireless devices and subscription of the wireless devices.

13. The method according to claim 1, wherein at least one of the CCs in the first cell is split into at least two further CCs, and wherein each of the at least two further CCs are individually configured with at least one of: the first TDD pattern, the second TDD pattern, or a fourth TDD pattern.

14. The method according to claim 1, wherein performing the selection of the TDD patterns for DL and UL communication on CCs in the first cell comprises: obtaining the first TDD pattern and the second TDD pattern; and providing an access network node serving the first cell with the first TDD pattern and the second TDD pattern.

15. The method according to claim 1, wherein the network management node is integrated with, collocated with, or part of an access network node serving the first cell with the first TDD pattern and the second TDD pattern.

16. The method according to claim 1, wherein the network management node is integrated with, collocated with, or part of a network-centric node controlling an access network node serving the first cell as well as at least one other access network node.

17. A network management node for selecting time-division duplex (TDD) patterns for downlink (DL) and uplink (UL) communication in TDD slots on component carriers (CCs) in a first cell, the network management node comprising processing circuitry, the processing circuitry being configured to cause the network management node to: perform selection of the TDD patterns for DL and UL communication on CCs in the first cell; according to the selection of the TDD patterns, at least first one of the CCs the first cell supports DL heavy services and is configured with a first TDD pattern of the TDD patterns having a higher fraction of DL TDD slots than a fraction of UL TDD slots, and at least second one of the CCs in the first cell supports UL heavy services and is configured with a second TDD pattern of the TDD patterns having a higher fraction of UL TDD slots than a fraction of DL TDD slots, wherein the fraction of the DL TDD slots and the fraction of the UL TDD slots to use in the second TDD pattern is identified based at least on UL measurements in the first cell; and wherein a third cell neighboring the first cell, the network management node being configured to perform selection of a third TDD pattern for the third cell; and perform selection of the third TDD pattern for DL and UL communication on CCs in the third cell, and according to the selection of the third TDD pattern for the third cell, the CCs in the third cell being configured with the third TDD pattern having DL TDD slots only coinciding with the DL TDD slots of the second TDD pattern and the UL TDD slots only coinciding with UL TDD slots of the first TDD pattern.

18. The network management node according to claim 17, wherein a second cell neighboring the first cell, the network management node being further configured to: obtain information of selection of a TDD pattern for DL and UL communication on CCs in the second cell, and wherein according to the selection of TDD patterns for DL and UL communication on CCs in the first cell, at least one, but not all, of the CCs in the first cell is configured with a same TDD pattern as the CCs in the second cell.

19. A non-transitory computer storage medium storing a computer program for selecting time-division duplex (TDD) patterns for downlink (DL) and uplink (UL) communication in TDD slots on component carriers (CCs) in a first cell, the computer program comprising computer code which, when run on processing circuitry of a network management node, causes the network management node to: perform selection of the TDD patterns for DL and UL communication on CCs in the first cell; according to the selection of the TDD patterns, at least first one of the CCs in the first cell supports DL heavy services and is configured with a first TDD pattern of the TDD patterns having a higher fraction of DL TDD slots than a fraction of UL TDD slots, and at least second one of the CCs in the first cell supports UL heavy services and is configured with a second TDD pattern of the TDD patterns having a higher fraction of UL TDD slots than a fraction of DL TDD slots, wherein the fraction of the DL TDD slots and the fraction of the UL TDD slots to use in the second TDD pattern is identified based at least on UL measurements in the first cell; and wherein a third cell neighboring the first cell, the network management node being configured to: perform selection of a third TDD pattern for the third cell; and perform selection of the third TDD pattern for DL and UL communication on CCs in the third cell, and according to the selection of the third TDD pattern for the third cell, the CCs in the third cell being configured with the third TDD pattern having DL TDD slots only coinciding with the DL TDD slots of the second TDD pattern and UL TDD slots only coinciding with the UL TDD slots of the first TDD pattern.